Insufficient funds.

To observe the therapeutic effect of acupuncture on Crohn's disease in remission and its influence of brain functional activity

1. Effect of acupuncture on symptoms （functional gastrointestinal symptoms, Fatigue, insomnia, depression, anxiety and perceived stress）of CD
2. Effect of acupuncture on brain functional activity of CD

Inclusion Criteria:

1. aged 16-70;
2. patients in remission (CDAI < 150);
3. patients were not taking medication or were only taking one or more of the following drugs: [prednisone ≤15mg/d, azathioprine (≤1mg/kg/d), methotrexate (≤15mg/w) or mesalazine (≤4g/d)] and prednisone was used for at least 1 month, while azathioprine, methotrexate or mesalazine was used for at least 3 months;
4. those who did not use TNF alpha and other preparations within 3 months before entering the study;
5. those who have never experienced acupuncture;
6. patients signing informed consent.

Exclusion Criteria:

1. patients who are recently pregnant or in pregnancy or lactation;
2. patients with serious organic diseases;
3. patients diagnosed as psychosis;
4. patients who take antibiotics, probiotics, traditional Chinese medicine and other drugs at the same time, or who suffer from multiple diseases and need to take other drugs for a long time, and may affect the observation of the efficacy of this trial;
5. severe skin diseases (such as erythema nodosum, pyoderma gangrenosum, etc.), eye diseases (such as iritis, uveitis, etc.), thromboembolic diseases and other serious extraintestinal manifestations;
6. there are serious intestinal fistula, abdominal abscess, intestinal stenosis and obstruction, perianal abscess, gastrointestinal hemorrhage, intestinal perforation and other complications;
7. patients with short bowel syndrome who have undergone abdominal or gastrointestinal surgery in the past half a year;
8. there are skin diseases or defects in the selected area of acupuncture and moxibustion that cannot be performed.